English verb conjugation
COULD OUTDUEL

Regular verb: outduel - outdueled - outdueled

Affirmation

Simple form	V-ing form
I could outduel you could outduel he could outduel we could outduel you could outduel they could outduel	I could be outdueling you could be outdueling he could be outdueling we could be outdueling you could be outdueling they could be outdueling
Perfect	V-ing perfect
I could have outdueled you could have outdueled he could have outdueled we could have outdueled you could have outdueled they could have outdueled	I could have been outdueling you could have been outdueling he could have been outdueling we could have been outdueling you could have been outdueling they could have been outdueling

Negation

Simple form	V-ing form
I could not outduel you could not outduel he could not outduel we could not outduel you could not outduel they could not outduel	I could not be outdueling you could not be outdueling he could not be outdueling we could not be outdueling you could not be outdueling they could not be outdueling
Perfect	V-ing perfect
I could not have outdueled you could not have outdueled he could not have outdueled we could not have outdueled you could not have outdueled they could not have outdueled	I could not have been outdueling you could not have been outdueling he could not have been outdueling we could not have been outdueling you could not have been outdueling they could not have been outdueling

Interrogative form

Simple form	V-ing form
could I outduel? could you outduel? could he outduel? could we outduel? could you outduel? could they outduel?	could I be outdueling? could you be outdueling? could he be outdueling? could we be outdueling? could you be outdueling? could they be outdueling?
Perfect	V-ing perfect
could I have outdueled? could you have outdueled? could he have outdueled? could we have outdueled? could you have outdueled? could they have outdueled?	could I have been outdueling? could you have been outdueling? could he have been outdueling? could we have been outdueling? could you have been outdueling? could they have been outdueling?

Interro-negative form

Simple form	V-ing form
could I not outduel? could you not outduel? could he not outduel? could we not outduel? could you not outduel? could they not outduel?	could I not be outdueling? could you not be outdueling? could he not be outdueling? could we not be outdueling? could you not be outdueling? could they not be outdueling?
Perfect	V-ing perfect
could I not have outdueled? could you not have outdueled? could he not have outdueled? could we not have outdueled? could you not have outdueled? could they not have outdueled?	could I not have been outdueling? could you not have been outdueling? could he not have been outdueling? could we not have been outdueling? could you not have been outdueling? could they not have been outdueling?